Question

What is the purpose of<! DOCTYPE> declaration​

Answer 1

Answer:

The DOCTYPE declaration is an instruction to the web browser about what version of HTML the page is written in. This ensures that the web page is parsed the same way by different web browsers. In HTML 4.01, the DOCTYPE declaration refers to a document type definition (DTD)

Answer 2

$\huge\underline\orange{αиsաҽя}$

ᴛʜᴇ ᴅᴏᴄᴛʏᴘᴇ ᴅᴇᴄʟᴀʀᴀᴛɪᴏɴ ɪꜱ ᴀɴ ɪɴꜱᴛʀᴜᴄᴛɪᴏɴ ᴛᴏ ᴛʜᴇ ᴡᴇʙ ʙʀᴏᴡꜱᴇʀ ᴀʙᴏᴜᴛ ᴡʜᴀᴛ ᴠᴇʀꜱɪᴏɴ ᴏғ ʜᴛᴍʟ ᴛʜᴇ ᴘᴀɢᴇ ɪꜱ ᴡʀɪᴛᴛᴇɴ ɪɴ. ᴛʜɪꜱ ᴇɴꜱᴜʀᴇꜱ ᴛʜᴀᴛ ᴛʜᴇ ᴡᴇʙ ᴘᴀɢᴇ ɪꜱ ᴘᴀʀꜱᴇᴅ ᴛʜᴇ ꜱᴀᴍᴇ ᴡᴀʏ ʙʏ ᴅɪғғᴇʀᴇɴᴛ ᴡᴇʙ ʙʀᴏᴡꜱᴇʀꜱ. ɪɴ ʜᴛᴍʟ 4.01, ᴛʜᴇ ᴅᴏᴄᴛʏᴘᴇ ᴅᴇᴄʟᴀʀᴀᴛɪᴏɴ ʀᴇғᴇʀꜱ ᴛᴏ ᴀ ᴅᴏᴄᴜᴍᴇɴᴛ ᴛʏᴘᴇ ᴅᴇғɪɴɪᴛɪᴏɴ (ᴅᴛᴅ).